4.3 Limiting Reactant, Theoretical Yield, and Percent Yield Flashcards
If the pizza recipe were a chemical reaction, the tomato sauce would be the ______ ______, the _____ that ____ the amount of product in a chemical reaction.
If the pizza recipe were a chemical reaction, the tomato sauce would be the limiting reactant, the reactant that limits the amount of product in a chemical reaction.
The tomato sauce _____ how many pizzas we can make.
The tomato sauce limits how many pizzas we can make.
Notice that the limiting reactant is the reactant that makes the ______ _____ __ ______.
Notice that the limiting reactant is the reactant that makes the least amount of product.
The reactants that __ ____ limit the amount of product—such as the crusts and the cheese in this example—are said to be in ______
The reactants that do not limit the amount of product—such as the crusts and the cheese in this example—are said to be in excess .
If this were a chemical reaction, three pizzas would be the _______ ____, the maximum amount of product that can be made in a chemical reaction based on the amount of limiting reactant.
If this were a chemical reaction, three pizzas would be the theoretical yield, the maximum amount of product that can be made in a chemical reaction based on the amount of limiting reactant.
this were a chemical reaction, the two pizzas would be our _____ ____, the amount of product actually produced by a chemical reaction.
(The _____ ____ is always equal to or less than the _____ ____ because a small amount of product is usually lost to other reactions or does not form during a reaction.)
this were a chemical reaction, the two pizzas would be our actual yield, the amount of product actually produced by a chemical reaction. (The actual yield is always equal to or less than the theoretical yield because a small amount of product is usually lost to other reactions or does not form during a reaction.)
our percent yield, the _____ of the _____ ____that was actually attained, is calculated as the ratio of the _____ ____ to the _____ ____
our percent yield , the percentage of the theoretical yield that was actually attained, is calculated as the ratio of the actual yield to the theoretical yield
The limiting reactant (or limiting reagent ) is the….
The limiting reactant (or limiting reagent ) is the reactant that is completely consumed in a chemical reaction and limits the amount of product.
The reactant in excess is any…
The reactant in excess is any reactant that occurs in a quantity greater than is required to completely react with the limiting reactant.
The theoretical yield is the…
The theoretical yield is the amount of product that can be made in a chemical reaction based on the amount of limiting reactant.
The actual yield is the….
The actual yield is the amount of product actually produced by a chemical reaction.
The percent yield is calculated as…
The percent yield is calculated as
actual yield / theoretical yield * 100%.
When working in the laboratory, we normally measure the initial quantities of reactants in ____, not in number of ______. To find the limiting reactant and theoretical yield from ______ ______ we must first convert the masses to amounts in moles.
When working in the laboratory, we normally measure the initial quantities of reactants in grams, not in number of molecules. To find the limiting reactant and theoretical yield from initial masses, we must first convert the masses to amounts in moles.
A reaction mixture contains 42.5 g Mg and 33.8 g O2; what is the limiting reactant and theoretical yield? To solve this problem, we must determine which of the _______ makes the least amount of _______.
A reaction mixture contains 42.5 g Mg and 33.8 g O2; what is the limiting reactant and theoretical yield? To solve this problem, we must determine which of the reactants makes the least amount of product.
We can find the limiting reactant by calculating how much _______ can be made from each _______. However, we are given the initial quantities in grams, and stoichiometric relationships are between moles, so we must first convert to…
We can find the limiting reactant by calculating how much product can be made from each reactant. However, we are given the initial quantities in grams, and stoichiometric relationships are between moles, so we must first convert to moles
